Photoelectric instrument ventilation component capable of balancing pressure

Abstract

The utility model relates to a ventilation component of a photoelectric instrument, belongs to the technical field of ventilation components, and particularly relates to a ventilation component of a photoelectric instrument capable of balancing pressure, which comprises a fixed tube, a movable sleeve is slidably mounted on the inner side wall surface of the fixed tube, and a ventilation component is arranged outside the movable sleeve and comprises a ventilation hole. A positioning disc is arranged on the front side of the movable sleeve, a plurality of fixing columns are fixedly installed on the side wall face, close to the movable sleeve, of the positioning disc, a positioning rod is slidably installed on the side wall of the positioning disc, the front end of the side wall of the positioning rod is sleeved with a reset spring, and a sealing plate is fixedly installed at the rear end of the side wall of the positioning rod. According to the utility model, the fixed tube is fixedly arranged on the photoelectric instrument, when the movable sleeve slides back and forth, the air pressure in the fixed tube changes, and the sealing plate moves along with the air pressure change, so that the fixed tube is communicated with the outside, and the air pressure in the fixed tube returns to normal; the problem that an existing breather pipe is normally open is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air-permeable components, in particular to an air-permeable component of a photoelectric instrument capable of balancing pressure. Background Art

[0002] When traditional photoelectric instruments are working, due to the constant changes in temperature or other environmental conditions, a pressure difference will be generated inside and outside the instrument, which will have an adverse effect on the precision work of the photoelectric instrument and is not conducive to the use and maintenance of the photoelectric instrument.

[0003] The Chinese patent publication number is CN219802745U, which discloses a breathable component for photoelectric instruments, a fixed tube, a sliding groove is opened on one side of the fixed tube, a movable sleeve is slidably connected in the sliding groove, and a telescopic mechanism is located on the movable sleeve. The telescopic mechanism includes two fixed columns fixedly connected to the inner wall of the movable sleeve; the utility model can be provided with a telescopic mechanism. When there is a pressure difference between the photoelectric instrument and the external environment, the movable sleeve will move and drive the telescopic rod composed of the fixed column and the movable column to telescope, and the telescopic rod telescopes and drives the reset spring to extend or compress. Since the fixed tube and the movable sleeve can be combined into a telescopic tube, the movement of the movable sleeve can increase or decrease the volume of the telescopic tube, thereby balancing the environment of the photoelectric instrument and the external environment, and has the advantages of long service life and good use effect.

[0004] In the above-mentioned prior art solution, when there is a pressure difference between the photoelectric instrument and the external environment, the movable sleeve moves to drive the rotating rod and the cylindrical block to move. When the cylindrical block moves to the bevel on the extrusion plate, it will squeeze the cylindrical block to drive the rotating rod to rotate. The rotation of the rotating rod drives the swing baffle to rotate, so that the swing baffle opens the ventilation pipe, allowing the photoelectric instrument and the external environment to ventilate each other. However, when the movable sleeve can no longer move, the cylindrical block will always fit with the bevel on the extrusion plate, and the ventilation pipe is therefore in a normally open state until the cylindrical block moves to the middle position on the extrusion plate. If the ventilation pipe is opened for a long time, dust in the air will enter the interior of the fixed pipe, and excessive dust will affect the use of the photoelectric instrument. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a photoelectric instrument breathable component that can balance pressure. A fixed tube is fixedly installed on the photoelectric instrument. When a movable sleeve slides back and forth, the air pressure inside the fixed tube changes. The sealing plate moves with the change in air pressure, so that the fixed tube is connected to the outside, and the air pressure inside the fixed tube returns to normal.

[0006] The technical solution to achieve the purpose of the utility model is: a photoelectric instrument ventilation component that can balance pressure, including a fixed tube, a movable sleeve is slidably installed on the inner wall of the fixed tube, a plurality of connecting parts are fixedly installed on the inner wall of the movable sleeve, the front end of the connecting part is fixedly installed on the inner wall of the movable sleeve, a ventilation component is arranged on the outside of the movable sleeve, the ventilation component includes a ventilation hole opened on the front wall of the movable sleeve, a positioning plate is arranged on the front side of the movable sleeve, a plurality of fixed columns that wrap the ventilation hole are fixedly installed on the side wall of the positioning plate close to the movable sleeve, a positioning rod is slidably installed on the side wall of the positioning plate, a reset spring is sleeved on the front end of the side wall of the positioning rod, one end of the reset spring close to the movable sleeve is fixedly connected to the side wall of the positioning plate, a sealing plate is fixedly installed on the rear end of the side wall of the positioning rod, and the sealing plate is slidably installed inside the ventilation hole.

[0007] In some embodiments, the cross section of the sealing plate is rhombus-shaped, and a limiting strip is fixedly mounted on the rear wall surface of the positioning rod.

[0008] In some embodiments, a sealing assembly is disposed outside the sealing plate, and the sealing assembly includes a sealing groove formed on the side wall of the vent hole, and a sealing strip is sleeved on the inner side wall of the sealing groove.

[0009] In some embodiments, a receiving groove is provided inside the sealing plate, and a plurality of oil outlet holes communicating with the interior of the receiving groove are provided at equal intervals on the inner wall of the sealing groove.

[0010] In some embodiments, an oil inlet pipe communicating with the containing groove is fixedly mounted on the side wall of the sealing plate, and a sealing cover is threadedly connected to the top end of the oil inlet pipe.

[0011] In some embodiments, two interception strips distributed in a mirror image are fixedly mounted on the inner side wall of the sealing groove, and the side walls of the interception strips fit with the side walls of the sealing strips.

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] First, the utility model fixes the fixed tube on the photoelectric instrument. When the movable sleeve slides back and forth, the air pressure inside the fixed tube changes. The sealing plate moves with the change of air pressure, so that the fixed tube is connected with the outside, so that the air pressure inside the fixed tube returns to normal. At this time, the elasticity of the return spring pushes the sealing plate to move toward the inside of the vent hole, so as to seal the inside of the vent hole; thus, the problem of the existing vent tube being normally open is solved.

[0014] Second: In the utility model, when the sealing plate is inside the vent hole, the sealing strip will fit tightly with the inner wall of the vent hole to ensure the sealing effect of the sealing plate; the lubricating oil is poured into the interior of the containing groove through the oil inlet pipe, and the lubricating oil flows out through the oil outlet hole and adheres to the side wall of the sealing strip, thereby reducing the friction between the sealing strip and the inner wall of the sealing groove, so that the sealing strip can rotate when the sealing plate moves, thereby reducing the resistance when the sealing plate moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a rear view of the ventilating component of the photoelectric instrument capable of balancing pressure of the utility model;

[0017] Figure 2 This is a front view of the ventilating component of the photoelectric instrument capable of balancing pressure of the utility model;

[0018] Figure 3 This is the front view of the ventilation assembly of the utility model;

[0019] Figure 4 It is a cross-sectional view of the sealing plate of the utility model.

[0020] Description of reference numerals:

[0021] 1. Fixed pipe; 2. Movable sleeve; 3. Connector; 4. Ventilation assembly; 41. Ventilation hole; 42. Sealing plate; 43. Positioning plate; 44. Fixed column; 45. Positioning rod; 46. Return spring; 47. Limiting strip; 5. Sealing assembly; 51. Sealing groove; 52. Sealing strip; 53. Oil inlet pipe; 54. Sealing cover; 55. Intercepting strip; 56. Receiving groove; 57. Oil outlet hole. DETAILED DESCRIPTION

[0022] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a photoelectric instrument ventilating component capable of balancing pressure through improvement. The technical solution of the utility model is:

[0024] like Figure 1 - Figure 3As shown, a photoelectric instrument breathable component capable of balancing pressure comprises a fixed tube 1, a movable sleeve 2 is slidably mounted on the inner wall of the fixed tube 1, a plurality of connecting members 3 are fixedly mounted on the inner wall of the movable sleeve 2, a front end of the connecting member 3 is fixedly mounted on the inner wall of the movable sleeve 2, a ventilation assembly 4 is arranged on the outside of the movable sleeve 2, the ventilation assembly 4 comprises a vent 41 opened on the front wall of the movable sleeve 2, a positioning plate 43 is arranged on the front side of the movable sleeve 2, a plurality of fixing columns 44 wrapping the vent 41 are fixedly mounted on the side wall of the positioning plate 43 close to the movable sleeve 2, a positioning rod 45 is slidably mounted on the side wall of the positioning plate 43, a reset spring 46 is sleeved on the front end of the side wall of the positioning rod 45, an end of the reset spring 46 close to the movable sleeve 2 is fixedly connected to the side wall of the positioning plate 43, a sealing plate 42 is fixedly mounted on the rear end of the side wall of the positioning rod 45, and the sealing plate 42 is slidably mounted inside the vent 41; the fixed tube 1 is fixedly mounted on the photoelectric instrument, when the movable sleeve 2 When the sleeve 2 slides forward and backward, the air pressure inside the fixed tube 1 changes. When the movable sleeve 2 moves forward, the air pressure inside the fixed tube 1 decreases due to the increase in space, so the sealing plate 42 moves toward the inside of the movable sleeve 2 until the inside of the vent hole 41 is in an open state, and the external air enters the inside of the fixed tube 1 through the vent hole 41. When the air pressure inside the fixed tube 1 returns to normal, the elasticity of the return spring 46 pushes the sealing plate 42 to move toward the inside of the vent hole 41. When the movable sleeve 2 moves backward, the air pressure increases due to the decrease in space inside the fixed tube 1. Therefore, the sealing plate 42 moves toward the outside of the movable sleeve 2 until the inside of the vent hole 41 is in an open state, and the external air enters the inside of the fixed tube 1 through the vent hole 41. When the air pressure inside the fixed tube 1 returns to normal, the elasticity of the return spring 46 pushes the sealing plate 42 to move toward the inside of the vent hole 41, seals the inside of the vent hole 41, and makes the air pressure inside the fixed tube 1 normal.

[0025] like Figure 3 As shown, in one embodiment, in order to facilitate the sealing plate 42 to return to the interior of the vent 41, the cross-section of the sealing plate 42 is in a diamond shape; by setting the cross-section of the sealing plate 42 to be in a diamond shape, if the position of the sealing plate 42 is offset, the sealing plate 42 can be guided by the side wall of the sealing plate 42 to return to the interior of the vent 41, and a limiting strip 47 is fixedly installed on the rear wall of the positioning rod 45; the limiting strip 47 limits the movement range of the positioning rod 45 to prevent the sealing plate 42 from completely leaving the interior of the vent 41.

[0026] like Figure 3 and Figure 4As shown, in one embodiment, in order to ensure the sealing effect of the sealing plate 42, a sealing assembly 5 is arranged on the outside of the sealing plate 42, and the sealing assembly 5 includes a sealing groove 51 opened on the side wall of the vent hole 41, and a sealing strip 52 is sleeved on the inner side wall of the sealing groove 51; when the sealing plate 42 is inside the vent hole 41, the sealing strip 52 will fit tightly with the inner side wall of the vent hole 41 to ensure the sealing effect of the sealing plate 42, and a receiving groove 56 is opened inside the sealing plate 42, and an oil inlet pipe 53 connected with the receiving groove 56 is fixedly installed on the side wall of the sealing plate 42, and a sealing cover 54 is threadedly connected to the top of the oil inlet pipe 53, and a plurality of oil outlet holes 57 connected with the inside of the receiving groove 56 are equidistantly opened on the inner side wall of the sealing groove 51; the lubricant is fed into the oil inlet pipe 53 through the oil inlet pipe 53 The lubricating oil is poured into the interior of the receiving groove 56, and the lubricating oil flows outward through the oil outlet 57 and adheres to the side wall of the sealing strip 52, thereby reducing the friction between the sealing strip 52 and the inner wall of the sealing groove 51, so that the sealing strip 52 can rotate when the sealing plate 42 moves, thereby reducing the resistance when the sealing plate 42 moves, and facilitating the circulation of external air and the air inside the fixed pipe 1. Two intercepting strips 55 distributed in a mirror image are fixedly installed on the inner wall of the sealing groove 51, and the side walls of the intercepting strip 55 are fitted with the side walls of the sealing strip 52. The movable range of the sealing groove 51 is limited by the intercepting strip 55, so that the side wall of the sealing strip 52 is tightly fitted with the end of the receiving groove 56 close to the outside, thereby avoiding the situation where the movable range of the sealing strip 52 is too large, which causes the oil inside the receiving groove 56 to leak out.

[0027] The specific working method is: the fixed tube 1 is fixedly installed on the photoelectric instrument, when the movable sleeve 2 slides back and forth, the air pressure inside the fixed tube 1 changes, and the sealing plate 42 moves with the change of air pressure, so that the fixed tube 1 is connected with the outside, so that the air pressure inside the fixed tube 1 returns to normal, and at this time, the elasticity of the reset spring 46 pushes the sealing plate 42 to move to the inside of the vent hole 41 to seal the inside of the vent hole 41; when the sealing plate 42 is inside the vent hole 41, it will fit tightly with the inner wall of the vent hole 41 through the sealing strip 52 to ensure the sealing effect of the sealing plate 42; the lubricating oil is poured into the inside of the receiving groove 56 through the oil inlet pipe 53, and the lubricating oil flows out through the oil outlet hole 57 and adheres to the side wall of the sealing strip 52, thereby reducing the friction between the sealing strip 52 and the inner wall of the sealing groove 51, so that the sealing strip 52 can rotate when the sealing plate 42 moves, thereby reducing the resistance of the sealing plate 42 when it moves.

[0028] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A photoelectric instrument air-permeable component capable of balancing pressure, comprising a fixed tube (1), a movable sleeve (2) being slidably mounted on the inner wall of the fixed tube (1), a plurality of connecting members (3) being fixedly mounted on the inner wall of the fixed tube (1), the front end of the connecting member (3) being fixedly mounted on the inner wall of the movable sleeve (2), characterized in that: A ventilation assembly (4) is arranged outside the movable sleeve (2), and the ventilation assembly (4) includes a ventilation hole (41) opened on the front side wall surface of the movable sleeve (2). A positioning plate (43) is arranged on the front side of the movable sleeve (2). A plurality of fixing columns (44) that wrap the ventilation hole (41) are fixedly installed on a side wall surface of the positioning plate (43) close to the movable sleeve (2). A positioning rod (45) is slidably installed on the side wall of the positioning plate (43). A reset spring (46) is sleeved on the front end of the side wall of the positioning rod (45). One end of the reset spring (46) close to the movable sleeve (2) is fixedly connected to the side wall of the positioning plate (43). A sealing plate (42) is fixedly installed on the rear end of the side wall of the positioning rod (45). The sealing plate (42) is slidably installed inside the ventilation hole (41).

2. The photoelectric instrument ventilating component capable of balancing pressure according to claim 1, characterized in that: The cross section of the sealing plate (42) is in a rhombus shape, and a limiting strip (47) is fixedly mounted on the rear wall surface of the positioning rod (45).

3. The photoelectric instrument ventilating component capable of balancing pressure according to claim 1, characterized in that: A sealing assembly (5) is arranged outside the sealing plate (42), and the sealing assembly (5) comprises a sealing groove (51) formed on the side wall of the vent hole (41), and a sealing strip (52) is sleeved on the inner side wall of the sealing groove (51).

4. The photoelectric instrument ventilating component capable of balancing pressure according to claim 1, characterized in that: The sealing plate (42) is provided with a receiving groove (56) in its interior, and the inner wall of the sealing groove (51) is provided with a plurality of oil outlet holes (57) in equidistant intervals in its circumference and in communication with the interior of the receiving groove (56).

5. The photoelectric instrument ventilating component capable of balancing pressure according to claim 4, characterized in that: An oil inlet pipe (53) communicating with the containing groove (56) is fixedly mounted on the side wall of the sealing plate (42), and a sealing cover (54) is threadedly connected to the top end of the oil inlet pipe (53).

6. The photoelectric instrument ventilating component capable of balancing pressure according to claim 3, characterized in that: Two interception strips (55) distributed in a mirror image are fixedly mounted on the inner side wall of the sealing groove (51), and the side walls of the interception strips (55) are in contact with the side walls of the sealing strips (52).

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